!  Second example sched input file for VLBA observations at 3mm.

!  The main difference from other 3mm examples is the use of automatic
!  generation of the reference pointing scans using information from
!  the external file peak.cmd.

!  Original 2000aug08 Craig Walker and Vivek Dhawan
!  Modified 10oct2000 RCW for better reference pointing.
!  Modified 21nov2000 RCW. Convert to autopeak.

! ==========================================================
! =================  Cover Information  ====================
! ==========================================================

 version = 1
 expt    = '3mm observing with autopeak'
 expcode = eg3mmb
 piname   = 'Craig Walker'    
 address1 = 'National Radio Astronomy Observatory'  
 address2 = 'P. O. Box O'                           
 address3 = 'Socorro, New Mexico, 87801'
 address4 = ' U.S.A. '
 phone    = '505 835 7247 '    
 obsphone = '505 835 7247 '     
 email    = cwalker@nrao.edu  
 fax      = '505 835 7027 '   
 obsmode  = '6cm 128-4-2 '
 obstype  = VLBA
 note1    = 'Will use reference pointing.' 

! ==========================================================
! ==============  Correlator Information  ==================
! ==========================================================
 
correl   = Socorro
coravg   = 1.0
corchan  = 64
cornant  = 4
corpol   = on
corwtfn  = uniform
corsrcs  = standard
cortape  = DAT
corship1 = 'Craig Walker'
corship2 = 'P. O. Box O'
corship3 = 'Socorro NM 87801'

! ==========================================================
! ==================  Program control  =====================
! ==========================================================
!    Normally SCHED will not overwrite preexisting files. 
!    If you want this protection, comment this following line.
 overwrit

!    Use automatic tape allocation.  Required for most VLBA
!    projects.  Does not affect stations with only 1 drive.
!    With this, you should not try to coordinate tape passes
!    and scans.  Without it, you must.
 autotape = 2

! ==========================================================
! =====  Line rest frequencies at 7mm, 3mm and 1.3cm.  =====
! ==========================================================

lineinit  /
lineset='SiO431'  restfreq=43122.027, 43122.027  /
lineset='SiO862'  restfreq=86243.4,   86243.4    /
lineset ='H2O'    restfreq=22235.08,  22235.08   /
endlines /    
            
! ==========================================================
! =========Automatic Reference Pointing Control ============
! ==========================================================
!  Use reference pointing with setups, stations, and sources
!  defined in the PEAKFILE.
 autopeak   !  Use reference pointing.
            !  All control information for reference pointing
            !  is in the following file including specification
            !  of the catalog where pointing sources are found.            
!  pkwatch    !  Print details of the search for pointing sources.
 peakfile = $SCHED/catalogs/peak.cmd

! ==========================================================
! ==================  Source  Catalog  =====================
! ==========================================================
! Note that pointing sources can be found in 
! The following file is used for the fringe finders.

srcfile = $SCHED/catalogs/sources.vlba

! This example observes AHSco (SiO maser) in the same mode as 
! the continuum observations as a calibration check.  For that,
! 8 velocities are needed, one for each channel, to spread the
! frequencies.
! The reference pointing insertion will use the 7mm SiO masers
! P-AHSco and others that are in sources.pointing.

srccat /

source='SgrA' RA=17:45:40.0399  DEC=-29:00:28.137  equinox='J2000'
remarks='Galactic center' /

source='AHSco' RA=17:11:16.98 DEC=-32:19:31.2 equinox=j2000 
vel=-7, -7, 100, 100, 200, 200, 300, 300
remarks='SEST. Many spectra on SEST home page.' /

endcat /

! ==========================================================
! =======================  Setup file  =====================
! ==========================================================
!  Note that it is no longer necessary to have the pointing
!  setup be similar to the observing setup as long as the 
!  pointing setup has FORMAT = NONE.  Then the formatter is
!  not reconfigured.
!  Strong SiO masers will be used for most of the pointing.  

setini = v3mm-256-8-2.set /
  nchan    = 8
  bits     = 2
  bbfilter = 8.0
  freqref  = 86244.99
  freqoff  =  -11.50,-11.50,-3.50,-3.50,4.50,4.50,12.50,12.50
  netside  =  U, U, U, U, U, U, U, U
  pol      = dual
  /
endset /

! ==========================================================
! =================  Initial Scan Information  =============
! ==========================================================

year     = 2000
month    = 7
day      = 5
start    = 02:30:00
STATIONS = VLBA_FD, VLBA_PT, VLBA_LA, VLBA_KP, VLBA_MK

! ==========================================================
! ========================  The Scans  =====================
! ==========================================================

pcal=OFF              !  No useful PCAL is available at 3 mm.

!  Start with two scans on 3C273.
!  The first is for pointing.  Rather than have SCHED insert
!  this scan, the use of POINT to make a scan a pointing scan
!  is demonstrated.  With no argument, all stations, regardless
!  of pointing group, are included.  POINT will actually 
!  cause the pointing to be done at 7mm.  The second scan 
!  records data for fringe finding at 3mm.

setup='v3mm-256-8-2.set' 
source='3C273'  dur = 10:00  gap = 4:00 point / 
source='3C273'  dur = 10:00  gap = 0:00 /

!  Now do 5 cycles of 2 scans each on SgrA, allowing SCHED 
!  to insert pointing before every other one scan.

rep=5  group=2
source=SgrA    dur = 10:00  gap = 4:00 /
source=SgrA    dur = 10:00  gap = 0:00 /

!  Get autocorrelation spectra on a line source.  This can help
!  with calibration and with troubleshooting.  Sufficient gap
!  is provided so pointing will be inserted.

source='AHSco'      !  A nearby strong line source
doppler               !  Shift frequency for doppler offsets.
linena='SiO862'       !  Use the 3mm SiO line
gap=0:10:00 dur=0:02:00 / 
nodop                 !  Turn off the doppler corrections.

!  Now do 5 cycles of two scans like those earlier.

rep = 5  group = 2
source=SgrA  dur=0:10:00 gap=0:4:00  /
source=SgrA  dur=0:10:00 gap=0:0:00  /

!  Insert a fringe finder (strong continuum source).
!  Line sources can help get close, but don't give good delays.

source='3C345' dur=10:00 gap = 6:00 /

!  Now do 5 more cycles of two scans like those earlier.

rep = 5  group = 2
source=SgrA  dur=0:10:00 gap=0:4:00  /
source=SgrA  dur=0:10:00 gap=0:0:00  /

!  Final fringe finder.

source='3C454.3' dur=10:00 gap = 4:00 /